In an interview on his greenhouses and building technologies, he describes how he used cheap and basic agricultural components to build a lovely little solar vacation house, shown here. He writes:

"The Solar Vacation House was primarily made from agricultural components, which included a half of a grain silo roof, and corrugated metal siding. The structure was passively solar heated through south facing plastic bubble windows, a sliding glass door, and a large translucent fiberglass sloping roof."